CN114577831A

CN114577831A - Cleavage device

Info

Publication number: CN114577831A
Application number: CN202210094121.1A
Authority: CN
Inventors: 王政领; 李�浩
Original assignee: Acme Beijing Technology Co ltd
Current assignee: Acme Beijing Technology Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-06-03

Abstract

The invention provides a cleavage device for cleaving a sample, the sample comprising a sample substrate and a stick stuck on the sample substrate, comprising: a sample holder assembly for holding a sample substrate; the impact part is arranged on the sample support assembly and can move on the sample support assembly; wherein the moving impacting part can impact the sticky stick to knock the sticky stick off the sample substrate. Based on the technical scheme of the invention, the sticky rod is impacted by rotating the impacting part so as to knock off the sticky rod from the sample substrate. Compared with the prior art, the problem that the sample holder or the sample substrate falls off in the moving process of the sample substrate is avoided by integrally moving the sample holder and the sample above the sample holder so that the sticky rod falls off from the sample substrate after touching the knife edge. Thereby improving the working stability and reliability of the cleavage device.

Description

Cleavage device

Technical Field

The invention relates to the technical field of cleaving equipment, in particular to a cleaving device.

Background

At present, the cleavage technology is widely applied to sample preparation of scientific instruments such as an X-ray photoelectron spectrometer, an X-ray diffractometer, a scanning tunneling microscope, an angle-resolved photoelectron spectroscopy and the like, surface oxidation, pollution and the like can be caused by cleavage of some samples in the atmosphere, in addition, atomic surface reconstruction and the like can be caused by thermal movement of molecules of the samples exposed in the atmosphere, and most of the cleavage processes are performed in a high vacuum or ultra-high vacuum environment or are placed in a low temperature environment for cleavage operation. The device that can carry out the cleavage simultaneously under multiple environment such as high temperature, low temperature, phase transition warm-area on the market is few, receives requirements such as space restriction moreover, and the cleavage device is small and exquisite, simple and convenient more receives scientific research personnel's favor.

The small and simple cleavage device in the related art generally performs impact cleavage by moving the sample holder and the sample thereon so that the sample touches the knife edge. However, the sample holder or the sample substrate may be peeled off during the movement of the sample substrate, which may affect the cleavage of the sample.

That is, when the cleavage device in the related art cleaves the sample, there is a problem that the sample holder or the sample substrate is detached from the cleavage device.

Disclosure of Invention

To solve the problems in the prior art, the present application provides a cleavage device, which solves the problem that the sample holder or the sample substrate falls off from the cleavage device.

The cleavage device of the present invention is a cleavage device for cleaving a sample, the sample including a sample base and a stick stuck on the sample base, the cleavage device comprising: a sample holder assembly for holding a sample substrate; the impact part is arranged on the sample support assembly and can move on the sample support assembly; wherein the striking part can strike the sticky stick to knock the sticky stick off the sample substrate.

In one embodiment, the sample holder further comprises a limiting part, wherein the limiting part is arranged on the sample holder component and used for limiting the movement position of the impact part. Through this embodiment, spacing portion has limit function, prevents that striking portion mistake from rotating to striking position striking and glues the stick and cause destruction to it. Thereby ensuring that the cleavage device can be used correctly and further ensuring that the sample can be cleaved smoothly.

In one embodiment, the striking section includes: the push rod is rotatably arranged on the sample support component; the driving component is used for driving the push rod to rotate; wherein, the spacing portion is used for injecing the rotational position of push rod. Through this embodiment, utilize drive assembly drive push rod to rotate to striking position to the realization is to gluing the striking of stick, and then ensures to glue the stick and can follow the sample basement and drop. Finally, the cleavage device can be ensured to be capable of smoothly cleaving the sample.

In one embodiment, a drive assembly comprises: the fixing block is fixed on the sample support component; the compression spring is arranged between the fixed block and the push rod; when the push rod is in butt contact with the limiting part, the compression spring is pressed on the fixing block by the push rod and is in a compression state. Through this embodiment, be in compression state when compression spring, compression spring can exert a resilience force to the push rod, and the push rod can take place to rotate under the effect of resilience force like this to make it rotate to striking position, and then realize the striking to gluing the stick, with the cleavage function of realization cleavage device to the sample. In addition, when the push rod is in butt contact with the limiting part, the push rod presses the compression spring on the fixing block, and the compression spring is in a compression state. Therefore, as long as the limiting part is moved to ensure that the limiting part is not abutted to the push rod, the push rod can automatically rotate to impact the sticky rod under the action of resilience force to realize the cleavage function. Therefore, the semi-automatic cleavage function of the cleavage device is realized, and the convenience of the use of the cleavage device is improved.

In one embodiment, the drive assembly further comprises a resilient balancing pad disposed between the compression spring and the push rod. Through this embodiment, the elasticity balancing pad can make the push rod atress even, and then ensures that the push rod can rotate to the striking position steadily, further improves the stability and the reliability of understanding device work.

In one embodiment, the driving assembly further comprises an adjusting rod, the adjusting rod penetrates through the fixing block, and the compression spring is sleeved on the adjusting rod. Through this embodiment, adjust the pole and be used for installing compression spring, adjust the pole simultaneously and still have the direction function, can ensure compression spring and can stretch out and draw back along the axial direction of adjusting the pole to ensure that the push rod atress is even, and then ensure that the cleaving device can work steadily. In addition, the compression spring can stretch out and draw back along the fixed direction, so that the service life of the compression spring can be prolonged, and the installation and maintenance cost of the cleavage device is saved.

In one embodiment, the stopper portion includes: the stop lever is rotatably arranged on the sample support component; and one end of the torsion spring is connected with the sample support component, and the other end of the torsion spring is in contact with the stop lever in a butting manner.

In one embodiment, the limiting part further comprises a limiting block, and the limiting block is arranged on the sample support assembly and used for limiting the rotating position of the stop lever. Through this embodiment, set up the torsional spring and make the pin have the automatic recovery function, after the push rod accomplished the striking to gluing the stick promptly, compression spring is in compression state when changeing back to its initial position, and the pin can rotate fast under the effect of the restoring force that the torsional spring applyed and reply to its initial position to the pivoted position of injecing the striking part, be about to it injecing initial position. Thereby the limit function of the limit part is realized.

In one embodiment, a sample holder assembly comprises: the bottom plate is provided with a sliding chute; the sample support can slide into the sliding groove along a first direction and is used for fixing a sample; and the lower pressing plate is arranged on the bottom plate and used for pressing the sample support in the sliding groove.

In one embodiment, the sample holder assembly further comprises an upper pressure plate disposed on the base plate for pressing the lower pressure plate against the sample holder. Through this embodiment, set up the top board and can ensure that the sample holds in the palm the better ground pressure fastening and fix in the spout. Thereby improving the working stability and reliability of the cleavage device.

The features mentioned above can be combined in various suitable ways or replaced by equivalent features as long as the object of the invention is achieved.

Compared with the prior art, the cleavage device provided by the invention at least has the following beneficial effects:

1. the sticky rod is impacted by rotating the impacting part, so that the sticky rod is knocked off from the sample substrate. Compared with the prior art, the problem that the sample holder or the sample substrate falls off in the moving process of the sample substrate is avoided by integrally moving the sample holder and the sample on the sample holder to enable the sticky rod to fall off from the sample substrate after the sticky rod touches the knife edge. Thereby improving the working stability and reliability of the cleavage device.

2. Meanwhile, the compression spring and the torsion spring are consistent in force during operation at each time, so that the falling area range of the sticky rod after knocking is also accurate, and the sticky rod recycling device is favorable for recycling the sticky rod after cleavage.

Drawings

The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:

FIG. 1 is a perspective view of the structure of the cleaving apparatus of the present invention;

FIG. 2 shows a schematic view (from a top view) of another angle of the cleaving apparatus of FIG. 1;

FIG. 3 shows a cross-sectional view at A-A in FIG. 2;

fig. 4 shows a schematic view of another angle of the cleaving apparatus of fig. 1.

In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.

Reference numerals:

10. a sample holder assembly; 11. a base plate; 111. a chute; 12. a sample holder; 13. pressing the plate downwards; 14. an upper pressure plate; 20. an impact section; 21. a push rod; 211. adjusting a rod; 212. a bevel blade; 213. a limit nut; 22. a drive assembly; 221. a fixed block; 222. a compression spring; 223. an elastic balance pad; 23. a support pillar; 30. a limiting part; 31. a stop lever; 311. a diagonal handle; 312. a limiting bulge; 32. a torsion spring; 33. a limiting block; 34. a threaded connection; 100. a sample; 101. a sample substrate; 102. stick the stick.

Detailed Description

The invention will be further explained with reference to the drawings.

It should be noted that the first direction in the present application refers to the width direction of the cleavage device in fig. 2, the cleavage device in the present application is used for cleaving the sample 100, and the sample 100 includes a sample substrate 101 and a stick 102 adhered to the sample substrate 101.

It should be noted that the cleaving device of the present application is used in conjunction with a mechanical gripper to cleave the sample 100 by the cleaving device.

As shown in fig. 1 to 4, the present invention provides a cleavage apparatus including a sample holder assembly 10 and an impact part 20. Wherein the sample holder assembly 10 is used for fixing the sample substrate 101, and the striking part 20 is partially rotatably disposed on the sample holder assembly 10. The rotatable portion of the rotary striking part 20 can strike the stick-on bar 102 to knock the stick-on bar 102 off the sample substrate 101.

In the above arrangement, the stick-on bar 102 is struck by rotating the striking section 20 so that the stick-on bar 102 is knocked off the sample substrate 101. Compared with the prior art, the problem that the sample holder or the sample substrate 101 falls off in the moving process of the sample substrate 101 is avoided by integrally moving the sample holder and the sample 100 thereon so that the sticky bar 102 falls off from the sample substrate 101 after encountering a knife edge. Thereby improving the working stability and reliability of the cleavage device.

It should be noted that the striking portion 20 is not limited to be rotatably disposed on the sample holder assembly 10, and may be disposed to be translated on the sample holder assembly 10, or may be disposed to be both translated and rotated on the sample holder assembly 10.

Specifically, as shown in fig. 1 to 4, in one embodiment, the cleaving apparatus further includes a position limiting part 30, and the position limiting part 30 is disposed on the sample holder assembly 10 to limit the rotational position of the striking part 20.

In the above arrangement, the position-limiting part 30 has a position-limiting function, and prevents the striking part 20 from being mistakenly rotated to the striking position to strike the adhesive rod 102 and damage the same. Thereby ensuring that the cleaving apparatus can be used properly and thus ensuring that the sample 100 can be cleaved smoothly.

Specifically, as shown in fig. 1-4, in one embodiment, the strike 20 includes a push rod 21 and a drive assembly 22. Wherein, the push rod 21 is rotatably disposed on the sample holder assembly 10, and the driving assembly 22 is used for driving the push rod 21 to rotate. The stopper 30 is used to limit the rotational position of the push rod 21.

In the above arrangement, the driving assembly 22 is used to drive the push rod 21 to rotate to the impact position, so as to impact the stick-stick 102, thereby ensuring that the stick-stick 102 can fall off from the sample substrate 101. Eventually ensuring that the cleaving device can cleave the sample 100 smoothly.

Specifically, as shown in fig. 1 to 4, in one embodiment, the striking part 20 further includes a support column 23, and the support column 23 is disposed on the sample holder assembly 10 for rotatably connecting the push rod 21 to the sample holder assembly 10.

Specifically, as shown in fig. 1-4, in one embodiment, the drive assembly 22 includes a fixed block 221 and a compression spring 222. The fixing block 221 is fixed to the sample holder assembly 10, and the compression spring 222 is disposed between the fixing block 221 and the push rod 21. When the push rod 21 is in contact with the stopper 30, the push rod 21 presses the compression spring 222 against the fixed block 221, and the compression spring 222 is compressed.

In the above arrangement, when the compression spring 222 is in a compressed state, the compression spring 222 exerts a resilient force on the push rod 21, so that the push rod 21 can rotate under the action of the resilient force, and thus the push rod rotates to the impact position, and further the stick 102 is impacted, so as to realize the cleavage function of the cleavage device on the sample 100. When the push rod 21 is in contact with the stopper 30, the push rod 21 presses the compression spring 222 against the fixed block 221, and the compression spring 222 is compressed. Thus, as long as the limiting part 30 is moved to prevent the limiting part 30 from abutting against the push rod 21, the push rod 21 will automatically rotate to impact the sticky bar 102 under the action of the resilience force to realize the cleavage function. Therefore, the semi-automatic cleavage function of the cleavage device is realized, and the convenience of the use of the cleavage device is improved.

Of course, in alternative embodiments not shown in this application, the drive assembly 22 may be configured in other configurations, such as by a drive motor or a hydraulic cylinder.

Specifically, as shown in fig. 1-4, in one embodiment, the driving assembly 22 further includes a resilient balancing pad 223, the resilient balancing pad 223 being disposed between the compression spring 222 and the push rod 21.

In the above arrangement, the elastic balance pad 223 can make the push rod 21 uniformly stressed, thereby ensuring that the push rod 21 can stably rotate to the impact position, and further improving the working stability and reliability of the understanding apparatus.

Specifically, as shown in fig. 1 to 4, in one embodiment, the driving assembly 22 further includes an adjusting rod 211, the adjusting rod 211 is disposed through the fixing block 221, and the compression spring 222 is disposed on the adjusting rod 211.

In the above arrangement, the adjusting rod 211 is used for mounting the compression spring 222, and the adjusting rod 211 also has a guiding function, so that the compression spring 222 can be extended and contracted along the axial direction of the adjusting rod 211, the uniform stress of the push rod 21 is ensured, and the stable operation of the cleaving device is ensured. In addition, the compression spring 222 can be extended and contracted in a fixed direction, which can prolong the service life of the compression spring 222, thereby saving the installation and maintenance costs of the cleaving device.

Specifically, as shown in fig. 1 to 4, in one embodiment, the adjusting rod 211 passes through an elliptical hole at the end of the push rod 21, and is in clearance fit therewith, the adjusting rod 211 and the compression spring 222 are coaxially fitted, and the adjusting rod 211 and the limit nut 213 are connected through threads. The adjusting rod 211 is connected with the fixing block 221 through threads.

It should be noted that the adjusting rod 211 has two functions, one is to limit the push rod 21, the adjusting rod 211 passes through the elliptical hole of the push rod 21 to limit the push rod 21 to rotate only along the supporting column 23, so as to prevent the end of the push rod 21 from shaking up and down, and the other is to guide the adjusting rod 211, so that the compression spring 222 moves along the axial direction of the adjusting rod 211 and guides the compression spring 222. Meanwhile, the end of the adjusting rod 211 is provided with a limiting nut 213, and the limiting nut 213 plays a limiting role after the push rod 21 rotates to a designated position through the rotation motion.

Specifically, as shown in fig. 1 to 4, in one embodiment, the stopper portion 30 includes a stopper 31 and a torsion spring 32. Wherein, the stop lever 31 is rotatably disposed on the sample holder assembly 10, one end of the torsion spring 32 is connected with the sample holder assembly 10, and the other end thereof is in interference contact with the stop lever 31.

In the above arrangement, the torsion spring 32 is arranged to enable the stop lever 31 to have an automatic return function, that is, after the push rod 21 impacts the sticky bar 102, the compression spring 222 is in a compressed state when rotating back to its initial position, and the stop lever 31 can rotate back to its initial position quickly under the action of the return force exerted by the torsion spring 32 to limit the rotating position of the impacting part 20, that is, to limit it to the initial position. Thereby realizing the position-limiting function of the position-limiting portion 30.

It should be noted that, the cleavage device is more convenient to use with the mechanical gripper in this application, and the mechanical gripper only needs to rotate clockwise to push the push rod 21 to rotate to its initial position, and can push the stop lever 31 to rotate to a position not abutting against the push rod 21 through rotating clockwise. This simplifies the operation of the gripper, thereby improving the efficiency of cleaving the sample 100.

Specifically, in one embodiment, the force of the torsion spring 32 and the force of the compression spring 222 during each operation are consistent and are substantially fixed values, so that the falling area range of the sticky stick 102 after knocking is also accurate, the falling sticky stick 102 substantially falls in the falling area, and the phenomenon of scattering around cannot occur. Therefore, the subsequent recovery of the sticky rod 102 is facilitated after the cleavage by the cleavage device, and the recovery efficiency of the sticky rod 102 is improved.

It should be noted that, as the cumulative frequency of the torsion spring 32 and the compression spring 222 increases, the elastic force generated when the torsion spring 32 and the compression spring 222 deform is weakened, and when the elastic force is weakened to a certain degree, the torsion spring can be replaced, so as to ensure that the cleaving device can work normally.

Specifically, as shown in fig. 1 to 4, in one embodiment, the position-limiting portion 30 further includes a position-limiting block 33, and the position-limiting block 33 is disposed on the sample holder assembly 10 and is used for limiting the rotation position of the stop lever 31.

In the above arrangement, the stopper 33 has a stopper function, so as to ensure that the stop lever 31 can be accurately rotated to return to its initial position, and prevent the stop lever from deviating from its initial position due to an excessively large rotation angle, thereby ensuring that the push rod 21 can be accurately limited to its initial position. Thereby ensuring that the cleaving device can work normally.

Specifically, as shown in fig. 1-4, in one embodiment, sample holder assembly 10 includes a base plate 11, a sample holder 12, and a lower platen 13. The bottom plate 11 is provided with a sliding groove 111, the sample holder 12 can slide into the sliding groove 111 along a first direction, the sample holder 12 is used for fixing the sample 100, and the lower pressing plate 13 is arranged on the bottom plate 11 and used for pressing the sample holder 12 into the sliding groove 111.

The lower platen 13 may be a spring piece, so that the sample holder 12 can be surely slid into the slide groove 111 in the first direction without detaching the lower platen 13, and the spring piece deforms to generate a repulsive force, and the sample holder 12 is pressed by the repulsive force. The lower press plate 13 is screwed to the base plate 11 by means of a screw fastener.

Specifically, as shown in fig. 1 to 4, in one embodiment, the sample holder assembly 10 further includes an upper pressure plate 14, and the upper pressure plate 14 is disposed on the bottom plate 11 for pressing the lower pressure plate 13 on the sample holder 12.

In the above arrangement, the upper platen 14 is provided to ensure that the sample holder 12 is better secured in the slide groove 111. Thereby improving the working stability and reliability of the cleavage device.

The upper press plate 14 is screwed to the base plate 11 by a screw fastener. The upper platen 14 and the lower platen 13 may share a threaded fastener.

Specifically, as shown in fig. 1 to 4, in one embodiment, the position-limiting portion 30 further includes a threaded connector 34, the threaded connector 34 is disposed on the bottom plate 11, and the torsion spring 32 is sleeved on the threaded connector 34.

Specifically, as shown in fig. 1-4, in one embodiment, the threaded connector 34 includes a connecting bolt and a nut disposed thereon. One end of the connecting bolt is connected to the bottom plate 11 in a threaded manner, the stop lever 31 and the nut are sleeved on the other end of the connecting bolt, and the stop lever 31 is positioned below the nut.

Specifically, as shown in fig. 1-4, in one embodiment, the support column 23 includes a coupling bolt and a nut disposed thereon. One end of the connecting bolt penetrates through the bottom plate 11 and the push rod 21 from the bottom of the bottom plate 11 in sequence. The number of the nuts is two, the nuts are sleeved on the connecting bolt, the push rod 21 is arranged between the two nuts, and the push rod 21 can be fixed on the connecting bolt by rotating the two nuts.

The working process of the cleaving apparatus in the present application is set forth below:

the sample holder 12 is placed in a clamping groove (a sliding groove 111) of the cleavage device through a mechanical claw, then the blocking rod 31 is made to rotate by pushing an inclined handle 311 at the end part of the blocking rod 31, after a limiting protrusion 312 on the blocking rod 31 is far away from the end part of the push rod 21, the push rod 21 is made to rotate along a supporting column 23, then the push rod 21 instantly contacts with the sticky rod 102, an inclined plane knife edge 212 on the push rod 21 knocks off the sticky rod 102, the sticky rod 102 cleaves the surface of the sample substrate 101, the cleavage function of the sample substrate 101 is realized, the sample holder 12 can be taken away through the mechanical claw after cleavage, and when the sample holder 12 is taken away, the mechanical claw can push the push rod 21 to rotate and reset along the original path. Meanwhile, the stop block 33 can prevent the stop lever 31 from swinging to one side of the sample holder 12 under the torsion of the torsion spring, and the stop lever 31 automatically resets under the action of the torsion spring.

The utility model provides a cleavage device can be in high temperature environment, normal atmospheric temperature environment, the alternating temperature environment, low temperature environment etc. operate, can use and operate under high vacuum or super high vacuum environment, high durability and convenient use, only need the gripper to assist simultaneously and operate and can realize using repeatedly on almost same degree of freedom direction (direction of rotation), the operation requirement to the gripper is low, the device can cleave at arbitrary degree of freedom direction, do not receive the space restriction, the device is small and exquisite, can arrange the place that vacuum cavity spatial position is compact relatively in, especially have the place of requirement to the restriction requirement or operation to the space very suitable.

Any mirror image direction, different material transformation and the like of the device are also within the technical protection range, the device is not limited to material characterization and related fields, other possible technical fields can be used, and the protection range can be expanded to all the whole equipment industries.

The disadvantages of the cleavage apparatus in the related art are mainly the following:

1. the feasibility of the stripping and cleavage by adopting the adhesive tape is poor in a low-temperature environment;

2. the sample holder is knocked, the sample is cleaved after the sample touches the knife edge by moving the sample holder, the sample holder or the sample substrate can fall off or other hidden dangers in the moving process of the sample substrate by the method, and the distance between the sample and the knife edge is too close. After the surface of the sample substrate is cut, secondary damage is easily caused to the outer surface which is just stripped when the sample holder is taken;

3. when the purpose of cleavage is achieved, the cleavage device in the prior art has one more moving rod, at least one interface needs to be arranged on the vacuum cavity and used for installing the moving rod, the cleavage mode needs more tools to be inserted into the vacuum cavity, the cleavage device is not stable enough during cleavage, and the operation requirement on people in the cavity is high.

The cleavage apparatus of the present invention solves the above problems, and has the following features:

1. the structure is novel, the arrangement is ingenious, and semi-automation of the cleavage process is realized through the matching of the compression spring and the torsion spring;

2. the cleavage process of the device can be realized by moving the force in almost the same freedom degree direction, the external assistance is less, the operation is simple, and the device can be used repeatedly;

3. the sample substrate is fixed on the base, and the sample substrate does not move in the cleavage process;

4. because the compression spring and the torsion spring have the same force during each operation, the falling area range of the sticky bar 102 after knocking is also accurate, and the device is favorable for recovering the sticky bar 102 after cleavage.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that various dependent claims and the features described herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims

1. A cleaving apparatus for cleaving a sample, the sample including a sample substrate and a sticky stick adhered to the sample substrate, the cleaving apparatus comprising:

a sample holder assembly for holding the sample substrate;

an impact portion disposed on the sample holder assembly, the impact portion being movable on the sample holder assembly;

wherein the striking part can strike the sticky stick to knock the sticky stick off the sample substrate.

2. The cleaving apparatus of claim 1, further comprising a position limiting portion disposed on the sample holder assembly for limiting a position of movement of the striking portion.

3. The cleaving apparatus of claim 2, wherein the striking portion comprises:

the push rod is rotatably arranged on the sample support component;

the driving assembly is used for driving the push rod to rotate;

wherein, the spacing portion is used for limiting the rotational position of the push rod.

4. The cleaving apparatus of claim 3, wherein the drive assembly comprises:

the fixing block is fixed on the sample support component;

the compression spring is arranged between the fixed block and the push rod;

when the push rod is in abutting contact with the limiting part, the push rod presses the compression spring on the fixing block, and the compression spring is in a compression state.

5. The cleaving apparatus of claim 4, wherein the drive assembly further comprises a resilient balancing pad disposed between the compression spring and the push rod.

6. The cleaving apparatus of claim 4, wherein the driving assembly further comprises an adjusting rod, the adjusting rod is disposed through the fixing block, and the compression spring is sleeved on the adjusting rod.

7. The cleaving apparatus of claim 2, wherein the stop portion comprises:

the stop lever is rotatably arranged on the sample support component;

and one end of the torsion spring is connected with the sample support component, and the other end of the torsion spring is in contact with the stop lever in an abutting mode.

8. The cleaving apparatus of claim 7, wherein the limiting portion further comprises a limiting block disposed on the sample holder assembly for limiting a rotational position of the stop lever.

9. The cleaving apparatus of any of claims 1-8, wherein the sample holder assembly comprises:

the bottom plate is provided with a sliding chute;

the sample holder can slide into the sliding groove along a first direction, and is used for fixing the sample;

and the lower pressing plate is arranged on the bottom plate and used for pressing the sample support in the sliding groove.

10. The cleaving apparatus of claim 9, wherein the sample holder assembly further comprises an upper platen disposed on the base plate for pressing the lower platen against the sample holder.